Add fuzzy score boosting for usage frequency #43899
Draft
+143
−18
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Adds a boost field to StringMatchCandidate that multiplies fuzzy match scores. Command palette uses this to rank frequently-used commands higher in search results.
Uses square root scaling (1 use → 2.5x, 10 uses → 5.74x, 50 uses → 11.6x) so frequent commands get advantage without completely overriding fuzzy match quality. Zero-score matches stay filtered out regardless of boost.
Includes tests verifying boost works with empty queries, affects ranking, and doesn't promote non-matches.
Alternative approach to #30386